This issue occurs when only Valkyrien Skies and addons are installed and no other mods

• I have tested this issue and it occurs when no other mods are installed

Minecraft Version

1.20.x

Mod Loader

Forge

Issue description

Unlike when standing on world blocks, crouch doesn't prevent the player from falling off that block.
This means it's very easy to try to use that mechanic and forget, and then fall to your death. Especially problematic when addons such as Eureka allow you to make blimps as you're going to be falling a very long way.

Issue reproduction

1. Create a construct
2. Sneak off any edge

Logs

No response